<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			tr:first-child>td::after{
				content: "表头";
			}
			tr+tr>td::after{
				content: "单元格";
			}
			tr:nth-child(n+2)>td::after{
				content: "单元格";
			}
			tr:nth-child(even){
				background-color: skyblue;
			}
			tr:nth-child(odd){
				background-color: orangered;
			}
		</style>
	</head>
	<body>
		<table border="1" width="400px" height="150px" cellpadding="0">
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
				<td></td>
			</tr>
		</table>
	</body>
</html>
